Fluke Biomedical 940-513 - Manual (Page 11)

Theory of Operation
Functional Description
2
2-1
Section 2
Theory of Operation
2.1 Functional Description
The Model 940-513 is an off-line, single channel sampler suitable for monitoring accident range
radioactive gases. The sampler is only used with the Model 943-27-31 Current Mode Beta Scintillation
Detector and radioactive check source part number 841A-123-50. The Model 943-27-31 detector and
841A-123-50 check source are described in separate manuals. Refer to Figure 1-1 for a general view of
the sampler and Appendix A for assembly and dimensional drawings.
Once the detector is inserted into the sampler and calibrated, operation is automatic. Refer to the
Instruction Manual for the Model 943-27-31 Detector for calibration information.